Biostatistics, statistical software II. A brief survey of statistical program systems Krisztina Boda PhD Department of Medical Informatics, University of Szeged

Krisztina Boda INTERREG 2 The need of a statistical computer system Simple statistical calculations can be performed by hand, based on given formulas, significance can be stated using statistical tables. The use of a computer system makes even these simple calculations safer, and it is necessary in case of more complicated problems. There are many statistical systems; the choice of the appropriate statistical software is not easy. Here we give only a brief summary of some such systems.

Krisztina Boda INTERREG 3 Statistical software used in Department of Medical Informatics SPSS SAS Statistica for Windows R (EXCEL) (SiGMASTAT) (STATA)

Krisztina Boda INTERREG 4 SPSS (Statistical Package for the Social Sciences) pull-down menus command syntax language internal file structure, data transformations, data processing and matching files the most important statistical methods are included

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Krisztina Boda INTERREG 6 SPSS

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Krisztina Boda INTERREG 8 SPSS References:  SPSS 15.0 Command Syntax Reference 2006, SPSS Inc., Chicago Ill.  Downloads (demo):   SPSS 16.0 (202 MB). Download a full, working copy of SPSS for Windows® and try it for yourself. SPSS is a modular, tightly integrated, full-featured software This evaluation copy will install SPSS Base and all add-on modules. If you purchase SPSS after the evaluation period, please consult your local sales office to ensure you order the correct modules for the features you require. Please note that this software trial will expire in approximately 14 days and is for evaluation purposes only.

Krisztina Boda INTERREG 9 SAS (Statistical Analysis System) The SAS System is an integrated system of software products provided by SAS Institute that enables the programmer to perform data entry, retrieval, management, and mining; report writing and graphics; statistical and mathematical analysis; business planning, forecasting, and decision support; operations research and project management; quality improvement; applications development and data warehousing (extract, transform, load). Statistical language Programs of new methods

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Krisztina Boda INTERREG 13 SAS References: SAS Institute, Inc: The MIXED procedure in SAS/STAT Software: Changes and Enhancements through Release Copyright © 1996 by SAS Institute Inc., Cary, NC anguage anguage

Krisztina Boda INTERREG 14 Statistica STATISTICA is a statistics and analytics software package developed by StatSoft, Inc. data analysis, data management, data mining, and data visualization procedures standard 2- and 3-dimensional graphs analytic and exploratory graphs In the help menu it contains a well-written electronic statistical textbook.

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Krisztina Boda INTERREG 16 Statistica

Krisztina Boda INTERREG 17 Statistica References:   Electronic textbook: Downloads (demo):  Statsitcica 8 demo: tml tml

Krisztina Boda INTERREG 18 R The R programming language, sometimes described as GNU S, is a programming language and software environment for statistical computing and graphics. R is widely used for statistical software development and data analysis, and has become a de-facto standard among statisticians for the development of statistical software. R's source code is freely available under the GNU General Public License. R uses a command line interface, though several graphical user interfaces are available.

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Krisztina Boda INTERREG 20 R References: _language, _language

Krisztina Boda INTERREG 21 Excel Microsoft Excel (full name Microsoft Office Excel) is a spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS. It features calculation and graphing tools which, along with aggressive marketing, have made Excel one of the most popular microcomputer applications to date. It is overwhelmingly the dominant spreadsheet application available for these platforms. Although it is not a statistical package, it contains tools for the most frequently used simple statistical calculations.